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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c22fe25f329e40228ee73526d71e7dc136646b012146ac758e77cb009f2bc147' 
  AND token = 'fzQekzi1MAYD24U/I1K5Sw0qHP3gLRxqKEqSSQQL/BA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}